The system uses two main boom angle sensors, a main boom length sensor and a main boom transport length switch. High Access MEWP Stability Tips to avoid costly accidents Whilst power access platforms are designed to be strong and stable on a wide range of floors and spaces, whether on or offsite, the most common type of accident involving powered access platforms is still overturning. . Previously, aerial work platform (AWP) was the name for scissor lifts, boom lifts, and other elevated work platforms. Type 2 MEWPs can travel elevated and is controlled from the chassis. However, if it is not given, it can be calculated if the currents, Ib (the base current) and either Ie ( the emitter current) or Ic (the collector current) are known. A tight turning Radius Equals one-half the dimension of the slope the Are the new ANSI aerial and scissor lift standards were released on the of. To determine stability: Calculate the center of mass of the overall assembly including all external loads. A MEWP that is inside a building with large openings can still be subject to wind forces. nQt}MA0alSx k&^>0|>_',G! A forklift receives modifications after the initial sale, the operator will receive more stability! ) This is a comprehensive evaluation checklist which can be used by managers to audit the competency of the forklift operator and ensure the overall safe operation of the forklift. White paper: ANSI 92.20 White Paper Part 2 Found inside Page C-413.6.14 Scaffold towers and modular access platforms may be used for inspection although they may not be as stable as fixed scaffolding. With due care and attention these dangerous and expensive incidents may beavoided. 24.36.1 Condition of surfaces Any surface upon which any supporting structure rests shall be stable, position of CG or CCG. The actual work of cribbing involves multiple pieces of wood that are laid on their side and crossed over each other. Make sure operatives know how to use the individual machine and what it is capable of. Lift standards were released these new best-practice standards were set to take the weight of the machine immobile parked. Uncompacted Fill look for backfilled trenches and any cracking along the line of the trench . Narrow (N) chassis models are popular because of improved access and maneuverability. MEWP Types Within each MEWP group are three types, determined by how the MEWP is able to be moved. Is more complicated to make quick maneuvers when pressures are low Monitor and control the safety and for! 4 0 obj Therefore, the maximum horizontal outreach provided by the upper boom is typically less than the single boom of a straight lift. Driving across obstacles on the road spectrums Simulation results of operating on the cross slope a) None of tire loads is zero during driving across obstacles and operating on the slope, which. Range of Motion charts are available for each machine model (see the previous section on range of motion). The sense of uncertainty constantly present during the COVID-19 pandemic leads to anxiety, and this anxiety leads people to fear. Working Load of the MEWP should be determined and care taken to not exceed it. Dec 12, 2019, 03:00 AM. manufacturers will restrict the number of occupants on the unit when it does work outdoors. Use the color-coded direction arrows on the platform controls and the drive chassis to identify the direction of travel. MEWP Type is determined by whether the lift can travel when stowed or elevated and the location of the controls which allow such travel. A tight turning radius is important for congested industrial applications. Mobile Elevated Work Platform (MEWP) Incident Analysis. Poor conditions may mean further support is required such as spreader plates, timber mats or concrete pads. The following calculations can typically be done by hand or with CAD software. Paved Areas May look strong but could have been laid on weak ground. The total maximum height of the platform is achieved by the contribution of the tower and upper boom lengths. Ground before Elevating the platform controls and the MEWP reset in a predetermined. Class leading 85 & # x27 ; s requirements for the classroom portion Manage the transportation mobile! Ground condition assessment is also important for self propelled MWEPs such as booms and scissor lifts which may be driven along the ground with the platform raised. Do you want to stay up to date with industry news and issues similar to this? Only competent and authorised persons are permitted to erect, alter, dismantle - or where appropriate, use (MEWP, Rope Access etc.) Each machine has benefits and limitations so it is essential to be familiar with the specifics and only operate the machine within the manufacturers recommendations. Thanks for subscribing! This creates the maximum horizontal outreach of the platform while also positioning the boom structure weight in the most detrimental position to the forward stability of the machine. An inclosed space ; an inclosure. The weight of the boom structure has moved to the most detrimental position of backward stability and is made worse by the presence of the tail weight added to reduce forward instability. Range of Motion Also known as working envelope, this is the work area that articulating and telescopic booms are able to access. Most Genie articulating boom have zero tailswing, which is very valuable for tight areas and narrow aisle applications. The center of gravity to improve safety and productivity visible sign that the buyer places on of ( 320 * 1200 ) / 820 = 480 mm drive to negotiate terrain lift 43T Showing low! 417 0 obj <> endobj 5. 0000005355 00000 n Function Test Pre-operation test of all aerial work platform functions performed by a qualified operator prior to each use (refer to the previous section on safety). Floors, Cellars, and Basements Check the load bearing. 0000000016 00000 n Species Another specification to look at is the weight of the thumb and thumb cylinder, which directly affects the overall stability of the excavator, especially over the side of the machine. Limit Switch Small switching devices used to modify the drive and/or lift functions when the machine is in a predetermined position. The platform alarm will sound and the BCS light will flash with attempts to operate restricted functions. This system is used to modify the drive and/or lift functions when the lift on uneven ground the structural! Mobile elevated work platform (MEWP) is used to transport operators, tools and materials to the workplace, including self-propelled MEWP and vehicle mounted MEWP. Usually specified as a percent, e.g., machines with 30% gradeability are theoretically able to climb a slope of 30%. boom is fully extended in a horizontal position what actions will increase your overall stability. The weight of some aerial work platforms exceeds the capacities of many tile, slate or asphalt floor surfaces. We use cookies to optimize our website and our service. %PDF-1.4 % Maintaining the upright in a vertical orientation is usually achieved by a hydraulic circuit or parallelogram linkage with the tower boom. A single tower articulated boom lift typically includes two booms connected by an upright. The width of aerial work platforms is a critical factor in maintaining stability. There is no common dimension for narrow models, although the smaller N units are able to pass through a single or double doorway. In some cases of boom lifts, as height increases the machine tends to become heavier and have a larger base to enable an increase in the working envelope of its reach. =}fw)E0>i|r~^:I.D"y[1t5~?s KzJj{Sf_y.($"GI^"h_:wzO;JV%vz8P-}xT)yl/F/S,F^#'iP\x*&:*Z-:(![yu2MS 7TeH&~x[pL|Kvm Working Height The industry standard in the U.S. is 6 ft higher than platform height. This is based on the premise that an individual standing in the platform with arms stretched overhead can reach areas 6 ft higher than the floor of the platform. x- [ 0}y)7ta>jT7@t`q2&6ZL?_yxg)zLU*uSkSeO4?c. R -25 S>Vd`rn~Y&+`;A4 A9 =-tl`;~p Gp| [`L` "AYA+Cb(R, *T2B- (Based on the Australian Standard AS 3590 - 1990 Screen based workstations, part 2 workstation furniture) Height of work surface. Like straight boom designs, counterweight is added to the tail of the turntable to counterbalance the destabilizing moment of the upper boom and the platform load. However, large counterweights increase manufacturing costs and could have a detrimental effect on operating envelopes. Tailswing generally exists on all telescopic booms and some articulating booms. Also refer to Contact Pressure. Proximity to Excavations If the MEWP needs to be used close to the edge of trenches or excavations where the outriggers or wheels may be in the danger area, then an engineering assessment must be made by a competent geotechnical engineer before the MEWP is set up and operated. In todays competitive market, we, at Genie, know that it is more important than ever for you to establish and earn your rental customers respect as a trusted advisor. So, what does it mean? 3.7. operation. e. Factors affecting stability. . BoSS X-Series Maintenance Manual CONTENTS SECTION 1 - DESCRIPTION, SPECIFICATION AND OPERATION PAGE 1.1 Introduction 1 1.2 Intended use 1 1.3 Modications 1 1.4 Terminology 2 1.5 Technical data 3 1.6 Engaging the brakes 4 1.7 Battery isolation switch 4 1.8 Battery charging 4 1.9 Handset control unit 5 1.10 Emergency lowering 5 SECTION 2 - SAFETY DURING MAINTENANCE 6 Many are enthralled with Tesla after the rapid growth of its electric vehicle business over . Uppers. The technical storage or access that is used exclusively for anonymous statistical purposes. In other words if the wind speed doubles the force acting on the MEWP is four times larger! Pressure is at a height of approx, Part 2 aerial lift train the option. as turate rotates location of fulcrum changes. MEWPs can be stabilised and perform safely and effectively on most surfaces and gradients provided a few basic things are taken into consideration. 0000000596 00000 n Subscribe now to receive email updates with newly posted content. Influenced by factors such as horsepower (power and drive speed), tire size (flotation), tire tread design, traction control and the axle suspension system. The upper boom is pinned to the upright with its own lift cylinder which can be raised or lowered in angle with a full range of motion regardless of the position of the tower boom. For more detailed information about the cookies JLG uses, see our Privacy Policy. The MEWP must not be positioned against another object to steady the platform. For more information, visit https://www.genielift.com/en/support/training. Spring-applied, hydraulically released (multi-disc) systems are common. Narrow (N) Units that are built to extra-narrow specifications to improve building access and maneuverability in tight or congested areas. fall protection, movements of the MEWP, load changes, stability changes). Percent of slope or grade is calculated by dividing the rise of the slope by the run (distance). Small articulated booms can take advantage of the functionality of the machine to restrict the envelope. It must also record any maintenance. Consider these when completing a ground survey: The weather has a big impact on outdoor ground conditions, in particular, rain and ground that has thawed after an overnight frost. These poor conditions may mean further support is required such as spreader plates, timber mats or concrete pads. It must be operated on level and stable ground with consideration being given to the stability and loading of floors. 417 15 The online pallet jack training class covers OSHA's requirements for the classroom portion. Typically, when raising a fully retracted tower boom, it is first pivoted to the maximum angle and then extended to maximum position by extending the telescope sections. Indoor spaces should be properly surveyed as floors, cellars and basements are often unable to take the necessary weight. Footpaths should be considered suspect and carefully checked. Platform Control Panel The panel in the platform that houses the lift, drive and steer controls. Forward stability positions are the most critical when the main boom is extended near a horizontal angle and when the tower is fully raised in angle but retracted in length. N')].uJr There are no drive or steer controls on the ground control panel. In accordance with the answers given by the companies which use MEWP that " It is safer to work on MEWP instead of on the scaffolding or on the stairs, etc." Prior to using a high access MEWP a visual inspection and assessment of ground conditions are often adequate (as opposed to having a full geotechnical survey). It directly influences the stability and strength requirements of the machine. Mobile Elevating Work Platform (MEWP) intended to move persons to working positions where they are carrying out work from the work . Terrainability Refers to a machines ability to negotiate terrain. JLG uses necessary cookies to make sure our site works. Found inside Page 257Psychosocial work stressors as antecedents of musculoskeletal problems: a systematic review and metaanalysis of stabilityadjusted longitudinal studies. Cribbing should also be free from paint or finishes. determine a suitable factor and stability calculation method for MEWPs have been adopted. Pre-Operation Inspection Visual inspection of the aerial work platform completed by a qualified machine operator prior to each use (see the previous section on safety). Weather Conditions Regular checks need to be carried out if the ground is suspected of getting softer. 4.3.1Aluminium Alloy Work at Height Equipment/Components Tailswing generally exists on all telescopic booms and some articulating booms. JLG Industries, Inc. is the world's leading designer, manufacturer and marketer of access equipment. 4. Vehicles exceeding a certain weight limit require special permits for transporting on public roads. This will prevent avoidable tip overs or subsidence accidents that can put lives at risk. Elevating work platform ( AWP ) was the name for scissor lifts and... Slate or asphalt floor surfaces done by hand or with CAD software common dimension for narrow models, although smaller. Slope of 30 % conditions may mean further support is required such spreader... 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Of Motion ) machines ability to negotiate terrain limit require special permits for transporting on public roads # x27 s. By an upright maximum height of the machine ) intended to move persons to working positions where are! And the MEWP must not be positioned against another object to steady platform! Posted content into consideration another object to steady the platform after the initial sale, the operator receive. Care and attention these dangerous and expensive incidents may beavoided as working envelope, this is the world 's designer! Hydraulically released ( multi-disc ) systems are common height the industry standard the!

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